Stanislas Wawrinka eased into the final of the Chennai Open on Saturday as Vasek Pospisil retired from their semifinal match.
Wawrinka will face France's Edouard Roger-Vasselin in the final of the hard-court event after he edged Marcel Granollers 6-2, 4-6, 6-3 in an entertaining three-set match.
Top seed Wawrinka had taken the first set in relatively straightforward fashion, and was able to preserve energy despite determined resistance from Canadian Pospisil, who withdrew with the score at 6-4, 5-5.
Wawrinka, who won the Chennai title in 2011, claimed the crucial advantage in the first set as he broke Pospisil's serve in the fifth game.
Pospisil showed excellent fighting spirit in the second, though, as he broke back immediately in the eighth game to level after dropping serve in the previous game.
But the fifth seed's hopes of reaching his first ATP Tour final ended when he pulled out because of a back injury.
Wawrinka will face France's Edouard Roger-Vasselin in the final of the hard-court event after he edged Marcel Granollers 6-2 4-6 6-3 in an entertaining three-set encounter.
Roger-Vasselin, seeded seventh, comfortably claimed the first set as he broke the Spaniard twice to move into the lead.
Sixth seed Granollers battled back well, breaking Roger-Vasselin in the third and fifth games of the second set to force a decider.
However, the world No. 38 could not carry that momentum into the third set, Roger-Vasselin coming back from a break down to seal victory and keep his hopes of a maiden ATP Tour title alive.